ASF GitHub Bot commented on TINKERPOP-1726:

Github user asfgit closed the pull request at:


> Support WebSockets ping/pong keep-alive in Gremlin server
> ---------------------------------------------------------
>                 Key: TINKERPOP-1726
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1726
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.2.5
>            Reporter: Andy Davidoff
>            Priority: Major
>             Fix For: 3.2.8, 3.3.2
> The ping/pong keep-alive system that is part of the WebSockets spec provides 
> for successful identification of a dropped connection from either end of the 
> connection.
> Currently, the Java client successfully issues keep-alive pings and receives 
> pong replies from the server.  Unfortunately, the server does not actively 
> ping clients, nor does it discover and react to dead clients when keep-alive 
> fails.
> This can cause pending client writes to lock up the server indefinitely when 
> a client spontaneously disconnects.

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